Clinker cooling
The liquid phase of cement clinker comprises the aluminate phase and the ferrite phase as well as a few others such as the alkali sulphates. When a liquid cools below its crystallisation temperature the size of the crystals which form depend largely on the rate of cooling, with fast cooling producing very fine crystals and slow cooling …
Cement production and cooling - Solex
Cement cooling is an important step in the cement production process, as it reduces the chance of gypsum dehydration and the formation of lumps, reducing the overall quality of the final cement. The end users of cement are also demanding lower cement temperatures in order to minimize the evaporation effect on the final concrete mix, enabling ...
Experimental research on cement grate cooler system and ...
The actual cooling air in the clinker layer is lower than the measuring data, which leads to the decline of cooling effects and then the increment of outlet temperature of cement clinker. Download : Download high-res image (225KB) Download : Download full-size image; Fig. 11. Validation of the clinker cooling model in the grate cooler.
Clinker cooling rate vs Cement Performance - Page 1 of 2
Faster cooling of clinker has the following effects;- 1. Smaller C3A crystals resulting in a more reactive and easier to grind clinker, producing faster cement setting times, improved early strengths and increased water demand. 2.
Clinker cooler – Making.com
Cooling is achieved by an airflow through the clinker bed from underneath. The flow is generated by fans and routed through special channels on the underside of the transport lanes for even distribution throughout the entire clinker bed this too is an enhancement over traditional clinker cooling equipment because even cooling of all the clinker ...
CLINKER COOLING TECHNOLOGY - Mechanical engineering ...
Clinker Cooling The hot clinker discharged from the kiln at a temperature of about 1300 C is further treated in clinker cooler. The cooling of clinker influences its structure, main composition, grindability and consequently, the quality of the resulting cement. Clinker cooling is necessary because 1. Hot clinker is difficult to convey. 2.
Reactions in the cement kiln - clinkering
Cooling of the clinker. As the clinker cools, the main liquid phase crystallizes to form aluminate phase, ferrite and a little belite. Fast cooling of clinker is advantageous - it makes for more hydraulically-reactive silicates and lots of small, intergrown, aluminate and ferrite crystals.
What is Cement Clinker? Composition, Types & Uses - Civil ...
Clinker is a nodular material produced in the kilning stage during the production of cement and is used as the binder in many cement products. The lumps or nodules of clinker are usually of diameter 3-25 mm and dark grey in color. It is produced by heating limestone and clay to the point of liquefaction at about 1400°C-1500°C in the rotary kiln. ...
HEAT EXCHANGE MODELING OF A GRATE CLINKER COOLER
The clinker cooling in steady-state conditions is modelled by a series of contactors (Fig. 4) with a perfect cross-flow heat exchange [6]. The heat transfer and the pressure drop are defined by correlations referring to macroscopic hydrodynamic criteria. The number of stages in the warm
Clinkerization - Cement Plant Optimization
Cooling Air Quantity is maintained to ensure cooling of clinker and heat recuperation from hot clinker from kiln. Specific air usage is generally considered as key performance indicator of cooler. New generation coolers can cool clinker to the temperatures to as low as 65 0C over ambient with a specific air consumption of 1.7 kg/kg-clinker.
Claudius Peters Clinker Cooling Technology | Claudius Peters
Clinker Coolers. When producing cement, the clinker cooler plays a decisive role downstream of the clinker production pyro process. A maximum of the amount of heat extracted from the clinker during the cooling process should be retained in the overall process – represented by the Cooler Efficiency.
Clinker Cooler - Cement Cooler | AGICO Cooler In …
In the calcination process of cement clinker, preheating, calcining, and cooling are three inseparable process links. As the supporting equipment of cement rotary kiln, clinker cooler (also called cement cooler) is a kind of heat exchange device that transfers heat from high-temperature clinker to low-temperature gas.It plays an important role in the cement clinker …
Rapid Cooling Vs Slow Cooling of Clinker in Cement ...
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Research on Cooling Mechanism of the Cement Clinker ...
Because of the macroporous characteristics of the cement clinker accumulation body, the changes in the physical properties of the surrounding air, such as viscosity, density, and so on must be taken into consideration in the cooling process of the cement clinker.
Temperature control during clinker cooling process | …
Clinker cooling. A very important process during cement production is the cooling of the clinker, since to a large extent the quality and characteristics of the cement depend on this phase. The hot clinker produced in the rotary kiln is transferred to a cooler, where …
(PDF) Simplified Modeling of Clinker Cooling Based on Long ...
The purpose of the present study is to develop a simplified dynamical model of clinker cooling process performed in grate coolers. The responses of three different pressures to changes of the ...
Clinker Cooler - Cement Cooler | AGICO Cooler In Cement Plant
In the calcination process of cement clinker, preheating, calcining, and cooling are three inseparable process links. As the supporting equipment of cement rotary kiln, clinker cooler (also called cement cooler) is a kind of heat exchange device that transfers heat from high-temperature clinker to low-temperature gas.It plays an important role in the cement clinker production process and ...
Latest trends in clinker cooling - Cement Lime Gypsum
(22) 29.11.2019 (43) 02.06.2021 (57) Clinker cooling with a cooling grate having a receiving section followed by a second section, heat recuperation from the clinker can be enhanced, if at least one...
CUSTOMISED CLINKER COOLING - claudiuspeters.com
At a specific load of 45.3 t/dm² and 1.78 Nm³/kg cooling air, a cold clinker temperature of 65˚C above ambient temperature is achieved. The intensive cooling of the clinker is realised by a long retention time inside the cooler. At maximum stroke numbers of 4 min-1 the ETA cooler can be operated with clinker bed heights of up to 1300 mm.
EFFECT OF COOLING RATES ON MINERALIZATION IN …
The rate at which cement clinker is cooled as it exits the kiln has long been known to be an important factor in cement quality. Cooling rate is one of the variables that has a significant impact on the minerals produced during the cement making process. The goal of the industry has been to produce cement clinker
Method and apparatus for acoustically enhancing cooling of ...
A method and apparatus for acoustically enhancing cooling of molten liquid. In one embodiment, a cement plant has a mill in which raw materials are mixed and ground into a powder, a kiln in which the powdered raw material undergoes a calcining process and is converted into a molten liquid known as clinker, a cooler for cooling and solidifying the clinker, and a finishing mill for grinding and ...
How Does Clinker Cooler Reduce Cement Production Energy ...
The main power consumption of a clinker cooler is its cooling fans. It usually takes 1.9-2.3 m 3 under standard conditions to cool 1 kg clinker from 1400 ℃ to 65 ℃, and the power consumption of the whole system is about 7 kWh. If the air consumption per kilogram of clinker cooling is reduced from 2 m 3 to 1.7 m 3, the air consumption efficiency will be 15% lower than that of other cement ...
4 PRIMARY CEMENT COMPOUNDS & THEIR ROLES - …
The C 3 S that forms in a cement clinker contains about 3-4% of oxides other than CaO and SiO 2. Strictly speaking, this mineral should therefore be called alite rather than C 3 S. In a typical clinker the C 3 S would contain about 1 wt% each of MgO, Al 2 O 3, and Fe 2 O 3, along with much smaller amounts of Na 2 O, K 2 O, P 2 O 5, and SO 3 ...
Cooling of cement clinker - & CO AS F L
Cooling of cement clinker. United States Patent 2173182. Abstract: This invention relates to the production of cement and is concerned more particularly with the cooling of cement clinker burned in a rotary kiln. SIn the manufacture of cement, it is now known that if the hot clinker is suddenly cooled, shortly aftecr its formation, from the ...
Clinker Cooling - kiln-Clinkerization-Rotary
The clinker is cooled by air flowing through the hot granulated solids. The heated air is recirculated as combustion air (secondary air) into the burner of the rotary kiln and/or into the burner of the calcination chamber (tertiary air). The higher the cooling rate, the higher the heat recovery and therefore the energy efficiency of the cement ...
Clinker Grate Cooler for Cement Plant
Diffusion, cooling the hot clinker. Cooling air after cooling process becomes hot air, and the high-temperature hot air is used as combustion air into the kiln and decomposition furnace (pre-decomposition kiln system), and some hot air can also be used for drying, and extra hot air will be discharged into the atmosphere after dust-removing.
Cement Clinker Quality Control During Clinker Production ...
Cooling Process. In the clinker production of dry process, the calcined clinker is quenched in a grated cooler or a rotary cooler after being discharged from the kiln. Because there are two processes of liquid phase condensation and mineral intersection in the clinker cooling process, the cooling process will have a certain degree of impact on ...
Reactions in the cement kiln - clinkering
Combustion air is the total air required for stoichiometric combustion of the fuels in the kiln and the precalciner; i.e. = primary + secondary + tertiary air Waste air of (grate) clinker coolers is the cooling air that is in excess of the combustion …
Clinker cooling
The cooling of clinker covers the period from when it passes the hottest part of the burning zone until it reaches ambient temperature in storage.
Latest Developments in High Efficency Clinker Cooling
Clinker movement in clinker coolers Reciprocating- grate, track and beam coolers Claudius Peters ETA Cooler Plug – Flow Transport: • No vertical mixing of clinker • Undisturbed temperature gradient • Steady heating of air, due to homogenious layers Slight compression in backward stroke: • Improved heat transfer due to low void volume